CONTROLS: Includes 650° thermostat, 100% safety shut off, automatic standing pilot and brass burner valves. Pressure regulators are set at the factory for the gas specified. Optimal pressures are 4" WC for natural gas and 10" WC for propane. Manifold size is 3/4" NPT. All controls are tested and confirmed in good working order. Calibration and adjustments are the responsibility of the installer.